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#!/usr/bin/env perl
# vim:set ts=4 sw=4 sts=4 et ai wm=0 nu:
#=============================================================================
# Copyright (c) 2024, Bob Lied
#=============================================================================
# ch-2.pl Perl Weekly Challenge 255 Task 2 Most Frequent Word
#=============================================================================
# You are given a paragraph $p and a banned word $w.
# Write a script to return the most frequent word that is not banned.
# Example 1
# Input: $p = "Joe hit a ball, the hit ball flew far after it was hit."
# $w = "hit"
# Output: "ball"
# The banned word "hit" occurs 3 times.
# The other word "ball" occurs 2 times.
# Example 2
# Input: $p = "Perl and Raku belong to the same family.
# Perl is the most popular language in the weekly challenge."
# $w = "the"
# Output: "Perl"
# The banned word "the" occurs 3 times.
# The other word "Perl" occurs 2 times.
#=============================================================================
use v5.38;
use builtin qw/true false/; no warnings "experimental::builtin";
use Getopt::Long;
my $Banned = 0;
my $DoTest = 0;
GetOptions("test" => \$DoTest, "banned:s" => \$Banned);
exit(!runTest()) if $DoTest;
say mfw( join(" ", @ARGV), $Banned);
sub mfw($p, $w)
{
my %freq;
$freq{$_}++ for ( split(" ", $p =~ s/[[:punct:]]+/ /gr) );
delete $freq{$w};
return (sort { $freq{$b} <=> $freq{$a} } keys %freq)[0];
}
sub runTest
{
use Test2::V0;
my $text;
$text = <<E_N_D;
Joe hit a ball, the hit ball flew far after it was hit.
E_N_D
is( mfw($text, "hit"), "ball", "Example 1");
$text = <<E_N_D;
Perl and Raku belong to the same family.
Perl is the most popular language in the weekly challenge.
E_N_D
is( mfw($text, "the"), "Perl", "Example 2");
done_testing;
}
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